MAME SVN History

199869 Revisions

r187069 Thursday 19th May, 2022 at 18:19:27 UTC by smf
Updated Commodore LCD colors, based on recent pictures from one of the prototypes. [smf] Fixed Commodore LCD real time clock reading, it relies on the RTC chip being able to ground PORT A while it is set to an output. Which is documented in the 6522 datasheet as being possible. It's NMOS, so it has weak pull ups and doesn't drive it's output hard. However due to a bug in the prototype ROM code, it currently has the date and month swapped round. [smf]

r187069 Thursday 19th May, 2022 at 18:19:27 UTC by smf

Updated Commodore LCD colors, based on recent pictures from one of the prototypes. [smf]

Fixed Commodore LCD real time clock reading, it relies on the RTC chip being able to ground PORT A while it is set to an output. Which is documented in the 6522 datasheet as being possible. It's NMOS, so it has weak pull ups and doesn't drive it's output hard. However due to a bug in the prototype ROM code, it currently has the date and month swapped round. [smf]

[src/devices/machine]	6522via.cpp
[src/mame/drivers]	clcd.cpp

https://github.com/mamedev/mame/commit/46a01470e6d4d83c2c7b3cd511571c3357d6051e

199869 Revisions